- #1
Deligrams
- 2
- 0
Hi all,
I have a car with a straight through exhaust, consisting of a 4 into 1 manifold, a single pipe, then a single silencer. Between the manifold and silencer is a join.
When i am driving on over run (closed throttle, decellerating) i know this joint sucks air in, as the exhaust makes a popping noise as unburnt fuel meets the air leaking in.
How do i explain this scientifically? Surely there must be positive pressure in the exhaust due to the engine pumping air into it? I presume this is something to do with bernoulli's principle?
Thanks,
Deligrams
I have a car with a straight through exhaust, consisting of a 4 into 1 manifold, a single pipe, then a single silencer. Between the manifold and silencer is a join.
When i am driving on over run (closed throttle, decellerating) i know this joint sucks air in, as the exhaust makes a popping noise as unburnt fuel meets the air leaking in.
How do i explain this scientifically? Surely there must be positive pressure in the exhaust due to the engine pumping air into it? I presume this is something to do with bernoulli's principle?
Thanks,
Deligrams